Area Code +44-1436-(250000...259999) located in Helensburgh, Argyll and Bute (AGB), more detail is as below. Place International Dialing Code : 44 International Prefix : 00 National Prefix : 0 National Destination Code : 1436 Subscriber Number From : 250000 Subscriber Number To : 259999 National Destination Code Length : 4 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : Frontier Systems Ltd Click here to buy United Kingdom Area Code Database Other Information Language Code : en (English) Country Number : 826 (United Kingdom) Country Code : GB (United Kingdom) Region Code : AGB Region Name : Argyll and Bute City : Helensburgh Timezone : Europe/London Coordinated Universal Time : +00:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 56.0000 Longitude : -4.7300 ‹ previous : +44-1436-(240000...249999) next › : +44-1436-(268000...268999) Dialling Instructions For trunk calls: 0 1436 250000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 44 1436 250000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 250000 ~ 259999 (Count: 10,000) Example: +44-1436-250000 / 0044-1436-250000 (01436-250000 / 0-1436-250000) +44-1436-250001 / 0044-1436-250001 (01436-250001 / 0-1436-250001) +44-1436-250002 / 0044-1436-250002 (01436-250002 / 0-1436-250002) +44-1436-250003 / 0044-1436-250003 (01436-250003 / 0-1436-250003) +44-1436-250004 / 0044-1436-250004 (01436-250004 / 0-1436-250004) ...+44-1436-xxxxxx / 0044-1436-xxxxxx (01436-xxxxxx / 0-1436-xxxxxx) ...+44-1436-259995 / 0044-1436-259995 (01436-259995 / 0-1436-259995) +44-1436-259996 / 0044-1436-259996 (01436-259996 / 0-1436-259996) +44-1436-259997 / 0044-1436-259997 (01436-259997 / 0-1436-259997) +44-1436-259998 / 0044-1436-259998 (01436-259998 / 0-1436-259998) +44-1436-259999 / 0044-1436-259999 (01436-259999 / 0-1436-259999)